Free · Web utility
Video Compressor
Reduce video file size in your browser while keeping strong visual quality. Choose High quality, Balanced, or Smaller file presets, optionally cap resolution or target a size percentage. Encoding runs locally with ffmpeg.wasm - no upload quota and no account required.
What you get
Quality-first presets
CRF-based High, Balanced, and Smaller presets map to sensible H.264 settings so you keep watchable quality while cutting size.
Private and unlimited
Compression stays in your browser. Files are not uploaded to Voltis servers, and there is no usage quota for now.
Clear before and after
See original size, compressed size, and percent saved, then download the MP4 result.
Questions
Is it paid?
No. Video Compressor is free and unlimited for now. A Pro tier is not required for v1.
Do my videos leave this device?
No. Encoding runs in your browser with ffmpeg.wasm. Nothing is uploaded to Voltis for compression.
Which formats work?
Common inputs like MP4, MOV, WebM, and MKV. Output is MP4 (H.264 + AAC) for wide compatibility.
Are there file size limits?
There is no product quota, but browsers have memory limits. Very large or long 4K clips may fail - the tool warns above about 200 MB.
Get the app
Video Compressor is free forever - no Pro tier and no paywall.